Design of a high-power, high-gain, 2nd harmonic, 22.848 GHz gyroklystron

Journal Article · Thu Aug 15 04:00:00 EDT 2013 · AIP Advances

DOI:https://doi.org/10.1063/1.4820387· OSTI ID:22220461

Veale, M. ^[1]; Purohit, P. ^[2]; Lawson, W. ^[3]

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1. University of California, Berkeley, CA, 24720 (United States)
2. Qualcomm Technologies, Inc. USA (United States)
3. University of Maryland, College Park, MD 20742 (United States)

In this paper we consider the design of a four-cavity, high-gain K-band gyroklystron experiment for high gradient structure testing. The frequency doubling gyroklystron utilizes a beam voltage of 500 kV and a beam current of 200 A from a magnetron injection gun (MIG) originally designed for a lower-frequency device. The microwave circuit features input and gain cavities in the circular TE{sub 011} mode and penultimate and output cavities that operate at the second harmonic in the TE{sub 021} mode. We investigate the MIG performance and study the behavior of the circuit for different values of perpendicular to parallel velocity ratio (α= V{sub ⊥}/ V{sub z}). This microwave tube is expected to be able to produce at least 20 MW of power in 1μs pulses at a repetition rate of at least 120 Hz. A maximum efficiency of 26% and a large signal gain of 58 dB under zero-drive stable conditions were simulated for a velocity ratio equal to 1.35.

• OSTI ID: 22220461
• Journal Information: AIP Advances, Journal Name: AIP Advances Journal Issue: 8 Vol. 3; ISSN AAIDBI; ISSN 2158-3226
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BEAM CURRENTS
EFFICIENCY
ELECTRIC POTENTIAL
KLYSTRONS
LINEAR ACCELERATORS
MAGNETRONS
PARTICLE BEAMS
SIGNALS
SIMULATION